Question

我使用Backgroundworkerclass来更新我的用户界面元素（Label）。请！检查下面的代码。它工作正常。但我试图取代Backgroundworkerclass并使用简单的工作线程来实现相同的目标。我怎样才能做到这一点？任何建议将不胜感激。感谢

public void backgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
        label1.Text = e.ProgressPercentage.ToString();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        if (!backgroundWorker1.IsBusy)
            backgroundWorker1.RunWorkerAsync();
        else
            label1.Text = "Busy Processing";
    }

    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
        for (int i = 0; i <= 100; i++)
        {
            Thread.Sleep(100);
            backgroundWorker1.ReportProgress(i);

            if (backgroundWorker1.CancellationPending)
            {
                e.Cancel = true;
                backgroundWorker1.ReportProgress(0);
                return;
            }
        }
    }

    private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
        label1.Text = e.ProgressPercentage.ToString();
    }

Answer 1

delegate void DelegateDoWork(int number);
    private void button1_Click(object sender, EventArgs e)
    {
        new Thread(DoWork).Start();
    }

    public void ProgressBar(int i)
    {
        if (label1.InvokeRequired)
        {
            var d = new DelegateDoWork(ProgressBar);
            this.Invoke(d, i);

        }
        else
            label1.Text = i.ToString();
    }

    public void DoWork()
    {
        for (int i = 0; i <= 100; i++)
        {
            Thread.Sleep(100);
            ProgressBar(i);
        }
    }

用工作线程替换Backgroundworkerclass

1 个答案: